Please help... Solve using the quadratic formula x^2 - 6x - 40=0

answer options:

x = 10 or x = -4

x = 4 or x = -10

x = -7 or x = 7

x = -4 - √7 or x = -4 + √7

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

idk man good luck man

21

jk it's 20

step-by-step explanation: